systemd-timedated.service, systemd-timedated — Time and date bus mechanism
systemd-timedated is a system service
that may be used as a mechanism to change the system clock and
timezone, as well as to enable/disable NTP time synchronization.
systemd-timedated is automatically activated
on request and terminates itself when it is unused.
The tool timedatectl(1) is a command line client to this service.
developer documentation for information about the APIs